Thanks again.
I started a 4x4 mile, while trying to upscale the 1x1, and running into the 512 pixel per mile limit. It cost a ton of time, and it was horrible. Now I'm behind on finishing the updates which must come first so I have no schedule for completing the 4x4. If everything goes well when I get back to it, it will have a 2 mile railyard, and industrial area and a large city. I'll need to create or co-opt AH2 buildings for additional custom objects to allow enough diversity. It isn't a trivial project.